There are lots of ways you can manage windows in OS X. You can use Spaces, or you could use multiple displays, and sort your windows on different virtual or physical desktops. But if you don’t use either of these methods, you may find that when you have a lot of windows visible on your display, it can be hard to focus.
HazeOver helps you deal with multiple windows by masking the ones that are in the background, putting a sort of translucent curtain behind your frontmost window. Instead of seeing multiple windows with their text and graphics distracting you from your task at hand, HazeOver lets you focus on the app and window you’re working in. You can dim your Twitter client, your email app, and Messages, so their changes don’t catch your eye when you’re browsing the web or writing in a word processor.
Read the rest of the review on Macworld.